報(bào)告人:楊力華 教授(中山大學(xué))
報(bào)告時(shí)間:2023年6月15日(周四) 上午10:00-11:00
報(bào)告地點(diǎn):數(shù)學(xué)與信息學(xué)院 數(shù)學(xué)系715
報(bào)告摘要:In this talk we'll discuss the construction of perfect reconstruction two-channel filter banks on arbitrary connected, undirected and weighted graphs. Based on the existing theory of the perfect reconstruction two-channel filter banks on bipartite graphs we generalize the concept of downsampling/upsampling and establish the frame of two-channel filter bank on arbitrary graphs. Then the equations for perfect reconstruction of the filter banks are presented and solved under proper conditions. Algorithms for designing orthogonal and biorthogonal banks are given and two typical orthogonal two-channel filter banks are calculated. The locality and approximation properties of such filter banks are discussed theoretically and experimentally.
報(bào)告人簡(jiǎn)介:楊力華,中山大學(xué)數(shù)學(xué)與計(jì)算科學(xué)學(xué)院教授,、博士生導(dǎo)師,中山大學(xué)計(jì)算科學(xué)與計(jì)算機(jī)應(yīng)用研究所所長,。1987年獲北京師范大學(xué)碩士學(xué)位,1995年獲得中山大學(xué)博士學(xué)位,1996-1998年在中科院數(shù)學(xué)所博士后流動(dòng)站工作,,主要研究逼近論,,小波分析與信號(hào)處理,發(fā)表論文120余篇,,出版專著一本,,譯著三本,教材一本,。多次擔(dān)任國家自然科學(xué)基金以及國家博士點(diǎn)基金通信評(píng)議人,,是第五屆全國生物特征識(shí)別會(huì)議的組織者之一,是第二次小波分析及其應(yīng)用國際會(huì)議的程序委員會(huì)成員?,F(xiàn)任“智能計(jì)算與信息處理”教育部與湖南省共建重點(diǎn)實(shí)驗(yàn)室學(xué)術(shù)委員會(huì)委員,,《數(shù)據(jù)挖掘》編委會(huì)成員,以及IEEE Senior Member,。曾主持國家自然科學(xué)基金,,廣東省自然科學(xué)基金,教育部骨干教師基金資助計(jì)劃,,廣州市科技計(jì)劃項(xiàng)目等項(xiàng)目,。
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